Systempath

1. Improve the semantics of a few comments.
2. Adjust the structure of a few code blocks.
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1. 改进少量注释语义。
2. 调整少量代码块结构。

What's Changed
* 1.2.2 by 2018-11-27 in https://github.com/gqylpy/systempath/pull/21


**Full Changelog**: https://github.com/gqylpy/systempath/compare/1.2.1...1.2.2

1. Fix the problem of chaotic encoding when writing to a JSON file.
2. Adjust the naming standardization of internal functions.
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1. 修复写入JSON文件时编码混乱的问题。
2. 调整内部函数命名规范性。

1. Added support for read and write operations for specific file types (ini, csv, json, yaml).
2. To enhance applicability, indirectly referenced the `Content.contains` method in the `File` class.
3. Adjusted the implementation of multiple indirectly referenced methods in the `File` class.
4. Added the `Path.__len__` method to quickly get the length of the path string.
5. Exposed the `Content.md5` method for use.
6. To enhance applicability, added two deprecated methods in the `File` class: `create` and `creates`.
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1. 增加了对特定文件类型（ini, csv, json, yaml）的读写操作支持。
2. 为了提高适用性，在 `File` 类中间接引用了 `Content.contains` 方法。
3. 调整了 `File` 类中的多个间接引用方法的实现。
4. 新增了 `Path.__len__` 方法，以便快速获取路径字符串的长度。
5. 暴露了 `Content.md5` 方法以供使用。
6. 为了提高适用性，在 `File` 类中增加了两个标记为弃用的方法： `create` 和 `creates`。

What's Changed
* 1.2alpha1 by 2018-11-27 in https://github.com/gqylpy/systempath/pull/19


**Full Changelog**: https://github.com/gqylpy/systempath/compare/1.1.5...1.2alpha1

1. Improved the `Content.overwrite` and `Content.append` methods, and adjusted the related code structure.
2. Added two deprecated methods (`read` and `write`) in the `File` class to enhance applicability.
3. Improved a few type annotations and corrected a code standardization error.
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1. 改进 `Content.overwrite` 和 `Content.append` 方法，并调整了相关代码结构。
2. 为提高适用性，在 `File` 类中增加了两个（`read` 和 `write`）标记为弃用的方法。
3. 改进少量类型注解并纠正了一处代码规范性错误。

1. Add a new method `Directory.search` for recursively searching subpaths containing specific characters.
2. Add a new method `Path.ldirname` to support cutting the path from the left side.
3. Adjust the naming convention of global variables.
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1. 新增方法 `Directory.search`，用于递归搜索包含特定字符的子路径。
2. 新增方法 `Path.ldirname`，支持从左侧切割路径。
3. 调整全局变量的命名规范性。

What's Changed
* 1.1.4 by 2018-11-27 in https://github.com/gqylpy/systempath/pull/17


**Full Changelog**: https://github.com/gqylpy/systempath/compare/1.1.3...1.1.4